B1698
SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1632/81: Lost Communication with Rear Airbag Sensor RH
DTC B1632/81 - Lost Communication with Rear Airbag Sensor RH
DTC B1633/81 - Rear Airbag Sensor Assembly RH Initialization Incomplete
DTC B1697/82 - Lost Communication with Door Side Airbag Sensor LH
DTC B1698/82 - Door Side Airbag Sensor LH Initialization Incomplete
DESCRIPTION
HINT: "Door side airbag sensor LH" refer to the side airbag sensor LH.
- The circuit for the side collision sensor LH or RH (to determine deployment of the front seat side airbag LH or RH, rear seat side airbag LH or RH and curtain shield airbag LH or RH) is composed of the center airbag sensor, side airbag sensor LH or RH, and rear airbag sensor LH or RH.
The side airbag sensor LH or RH and rear airbag sensor LH or RH detect impacts to the vehicle and send signals to the center airbag sensor to determine if the airbag should be deployed.
DTC B1632/81 or B1697/82 is stored when a malfunction is detected in the circuit for the side collision sensor LH or RH (to determine deployment of the front seat side airbag LH or RH, rear seat side airbag LH or RH and curtain shield airbag LH or RH).
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK FOR DTC
(a) Turn the engine switch on (IG), and wait for at least 60 seconds.
(b) Clear the DTCs stored in the memory. DTC Check / Clear
(c) Turn the engine switch off.
(d) Turn the engine switch on (IG), and wait for at least 60 seconds.
(e) Check for DTCs. DTC Check / Clear
Result
HINT: Codes other than DTC B1632, B1633, B1697 and B1698 may be output at this time, but they are not related to this check.
B -- CHECK CONNECTION OF CONNECTORS
A -- USE SIMULATION METHOD TO CHECK
C -- Continue to next step.
2. CHECK CONNECTION OF CONNECTORS
(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the center airbag sensor, the side airbag sensor RH and rear airbag sensor RH.
OK:
The connectors are properly connected.
NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.
3. CHECK CONNECTORS
(a) Disconnect the connectors from the center airbag sensor, rear airbag sensor RH and side airbag sensor RH.
(b) Check that the connectors (on the center airbag sensor side, rear airbag sensor RH side and side airbag sensor RH side) are not damaged.
OK:
The connectors are not deformed or damaged.
NG -- REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
4. CHECK SIDE AIRBAG SENSOR RH
(a) Interchange the side airbag sensor LH with RH and connect the connectors to them.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the engine switch on (IG), and wait for at least 60 seconds.
(d) Clear the DTCs stored in the memory. DTC Check / Clear
(e) Turn the engine switch off.
(f) Turn the engine switch on (IG), and wait for at least 60 seconds.
(g) Check for DTCs. DTC Check / Clear
Result
HINT: Codes other than DTC B1632, B1633, B1697 and B1698 may be output at this time, but they are not related to this check.
(h) Turn the engine switch off.
(i) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(j) Return the side airbag sensor RH and LH to their original positions and connect the connectors to them.
B -- REPLACE SIDE AIRBAG SENSOR RH
A -- USE SIMULATION METHOD TO CHECK
C -- Continue to next step.
5. CHECK REAR AIRBAG SENSOR RH CIRCUIT
(a) Disconnect the connectors from the side airbag sensor RH and rear airbag sensor RH.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
(d) Turn the engine switch off.
(e) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(f) Using a service wire, connect terminals 2 (BCR+) and 1 (BCR-) of connector E.
NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.
(g) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(h) Disconnect the service wire from connector E.
(i) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- CHECK FRONT DOOR WIRE RH (SIDE AIRBAG SENSOR RH - NO. 2 FLOOR WIRE)
OK -- Continue to next step.
6. CHECK REAR AIRBAG SENSOR RH
(a) Temporarily replace the rear airbag sensor RH with a new one.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the engine switch on (IG), and wait for at least 60 seconds.
(d) Clear the DTCs stored in the memory. DTC Check / Clear
(e) Turn the engine switch off.
(f) Turn the engine switch on (IG), and wait for at least 60 seconds.
(g) Check for DTCs. DTC Check / Clear
OK:
DTC B1632 or B1633 is not output.
HINT: Codes other than DTC B1632 and B1633 may be output at this time, but they are not related to this check.
NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK -- REPLACE REAR AIRBAG SENSOR RH
7. CHECK FRONT DOOR WIRE RH (SIDE AIRBAG SENSOR RH - NO. 2 FLOOR WIRE)
(a) Disconnect the front door wire RH connector from the No. 2 floor wire.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
(d) Turn the engine switch off.
(e) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(f) Using a service wire, connect terminals 2 (BCR+) and 1 (BCR-) of connector C.
NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.
(g) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(h) Disconnect the service wire from connector C.
(i) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPLACE FRONT DOOR WIRE RH
OK -- REPLACE NO. 2 FLOOR WIRE
8. CHECK CONNECTION OF CONNECTORS
(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the center airbag sensor, the side airbag sensor LH and rear airbag sensor LH.
OK:
The connectors are properly connected.
NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.
9. CHECK CONNECTORS
(a) Disconnect the connectors from the center airbag sensor, rear airbag sensor LH and side airbag sensor LH.
(b) Check that the connectors (on the center airbag sensor side, rear airbag sensor LH side and side airbag sensor LH side) are not damaged.
OK:
The connectors are not deformed or damaged.
NG -- REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
10. CHECK REAR AIRBAG SENSOR LH
(a) Temporarily replace the rear airbag sensor LH with a new one.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the engine switch on (IG), and wait for at least 60 seconds.
(d) Clear the DTCs stored in the memory. DTC Check / Clear
(e) Turn the engine switch off.
(f) Turn the engine switch on (IG), and wait for at least 60 seconds.
(g) Check for DTCs. DTC Check / Clear
OK:
DTC B1697 and B1698 are not output.
HINT: Codes other than DTC B1697 and B1698 may be output at this time, but they are not related to this check.
NG -- CHECK SIDE AIRBAG SENSOR LH CIRCUIT
OK -- REPLACE REAR AIRBAG SENSOR LH
11. CHECK SIDE AIRBAG SENSOR LH CIRCUIT
(a) Turn the engine switch off.
(b) Disconnect the connectors from the rear airbag sensor LH and side airbag sensor LH.
(c) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
(e) Turn the engine switch off.
(f) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(g) Using a service wire, connect terminals 2 (BCL+) and 1 (BCL-) of connector E.
NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.
(h) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(i) Disconnect the service wire from connector E.
(j) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- CHECK FLOOR WIRE (SIDE AIRBAG SENSOR LH - FRONT DOOR WIRE LH)
OK -- Continue to next step.
12. CHECK SIDE AIRBAG SENSOR LH
(a) Connect the connector to the rear airbag sensor LH.
(b) Interchange the side airbag sensor LH with RH and connect the connectors to them.
(c) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(d) Turn the engine switch on (IG), and wait for at least 60 seconds.
(e) Clear the DTCs stored in the memory. DTC Check / Clear
(f) Turn the engine switch off.
(g) Turn the engine switch on (IG), and wait for at least 60 seconds.
(h) Check for DTCs. DTC Check / Clear
Result
(i) Turn the engine switch off.
(j) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(k) Return the side airbag sensor RH and LH to their original positions and connect the connectors to them.
B -- REPLACE SIDE AIRBAG SENSOR LH
A -- USE SIMULATION METHOD TO CHECK
C -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
13. CHECK FLOOR WIRE (SIDE AIRBAG SENSOR LH - FRONT DOOR WIRE LH)
(a) Disconnect the floor wire connector from the front door wire LH.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
(d) Turn the engine switch off.
(e) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(f) Using a service wire, connect terminals 2 (BCL+) and 1 (BCL-) of connector C.
NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.
(g) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(h) Disconnect the service wire from connector C.
(i) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPLACE FLOOR WIRE
OK -- REPLACE FRONT DOOR WIRE LH